The epidermal growth factor receptor (EGFR) pathway is a key molecular pathway in the pathogenesis of SCCHN. Cetuximab, a therapy targeting the EGFR pathway, has shown great promise in SCCHN. The EXTREME study found that by combining cetuximab to a regimen of cisplatin and 5-fluorouracil, PFS could be extended to 5.6 months from 3.3 months, and that overall survival increased to 10.1 months versus 7.4 months. While this study proved a survival benefit with the addition of cetuximab, there were high rates of Grade 3 or 4 toxicities to the chemotherapy backbone of high dose cisplatin with 5-fluorouracil.